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POmatplotlib candlestick bars/boxes/width/spacing
 

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  1. POmatplotlib candlestick bars/boxes/width/spacing
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    <p>I am using matplotlib to draw candlestick charts.</p> <p>[Q] The default setting shows the high-low bar running through the open-close box. I would prefer to have the open-low box be "above" the line so that I only see high-max(open,close) and min(open,close)-low as lines. Is that possible? How?</p> <blockquote> <p>I answered my own question and am posting my finding with the original question if it helps anyone else.</p> <p>The only way to do this is by rewriting the candletsick() function to draw two lines instead of one. I have some sample code that I am using that does this. Always happy to hear better ways to do the same thing.</p> </blockquote> <pre><code>def fooCandlestick(ax, quotes, width=0.5, colorup='k', colordown='r', alpha=1.0): OFFSET = width/2.0 lines = [] boxes = [] for q in quotes: t, op, cl, hi, lo = q[:5] box_h = max(op, cl) box_l = min(op, cl) height = box_h - box_l if cl&gt;=op: color = colorup else: color = colordown vline_lo = Line2D( xdata=(t, t), ydata=(lo, box_l), color = 'k', linewidth=0.5, antialiased=True, ) vline_hi = Line2D( xdata=(t, t), ydata=(box_h, hi), color = 'k', linewidth=0.5, antialiased=True, ) rect = Rectangle( xy = (t-OFFSET, box_l), width = width, height = height, facecolor = color, edgecolor = color, ) rect.set_alpha(alpha) lines.append(vline_lo) lines.append(vline_hi) boxes.append(rect) ax.add_line(vline_lo) ax.add_line(vline_hi) ax.add_patch(rect) ax.autoscale_view() return lines, boxes </code></pre> <p>[Q] Does matplotlib support setting the width of the candle and also the spacing between each candlestick?</p> <p>Thanks.</p>
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    1. COIf you have found a solution, the best thing to do is [answer your own question](http://blog.stackoverflow.com/2011/07/its-ok-to-ask-and-answer-your-own-questions/)
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